import numpy as np
import matplotlib.pyplot as plt
from mpl_toolkits.mplot3d import Axes3D

fig = plt.figure()
ax = Axes3D(fig)

x = np.linspace(0,1000,20)
y = np.linspace(0,500,20)

X,Y = np.meshgrid(x, y)

plt.plot(X, Y,
         color='limegreen',  # 设置颜色为limegreen
         marker='.',  # 设置点类型为圆点
         linestyle='')  # 设置线型为空，也即没有线连接点
plt.grid(True)
plt.show()